TypeScript: add extensions to tsconfig and fix type errors (#12781)

* TypeScript: add extensions to tsconfig and fix type errors

- Add extensions/**/* to tsconfig.json includes
- Export ProviderAuthResult, AnyAgentTool from plugin-sdk
- Fix optional chaining for messageActions across channels
- Add missing type imports (MSTeamsConfig, GroupPolicy, etc.)
- Add type annotations for provider auth handlers
- Fix undici/fetch type compatibility in zalo proxy
- Correct ChannelAccountSnapshot property usage
- Add type casts for tool registrations
- Extract usage view styles and types to separate files

* TypeScript: fix optional debug calls and handleAction guards

extensions/tlon/src/urbit/send.ts

@@ -67,7 +67,7 @@ export async function sendGroupMessage({
   let formattedReplyId = replyToId;
   if (replyToId && /^\d+$/.test(replyToId)) {
     try {
-      formattedReplyId = formatUd(BigInt(replyToId));
+      formattedReplyId = scot("ud", BigInt(replyToId));
     } catch {
       // Fall back to raw ID if formatting fails
     }

extensions/tlon/src/urbit/sse-client.ts

@@ -204,7 +204,8 @@ export class UrbitSSEClient {
     if (!body) {
       return;
     }
-    const stream = body instanceof ReadableStream ? Readable.fromWeb(body) : body;
+    // oxlint-disable-next-line typescript/no-explicit-any
+    const stream = body instanceof ReadableStream ? Readable.fromWeb(body as any) : body;
     let buffer = "";
 
     try {